In a past job we used to have custom acrylic work done by a company called TAP Plastics and they impressed me with their speed and how nicely made the stuff was (we bought sign holders, some stencils for spray painting, some custom cubby-boxes...kind of random stuff). They are a west coast company only though as far as I know.
They happen to have a shop about 6 blocks from my house and I keep thinking I'll stop in some day and see how much they'd charge to make templates. They can make pretty much anything you want out of acrylic sheets and I think they'd do a great job. Not sure how much it'd cost though...I'm guessing not very cheap. But I could be wrong!